Correlation between the transition temperature and the superfluid density in BCS superconductor NbB2+x (Articolo in rivista)

Type
Label
  • Correlation between the transition temperature and the superfluid density in BCS superconductor NbB2+x (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Khasanov, R; Shengelaya, A; Maisuradze, A; Di Castro, D; Escamilla, R; Keller, H (2008)
    Correlation between the transition temperature and the superfluid density in BCS superconductor NbB2+x
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Khasanov, R; Shengelaya, A; Maisuradze, A; Di Castro, D; Escamilla, R; Keller, H (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 77 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Khasanov, R.; Maisuradze, A.; Di Castro, D.; Keller, H.] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland; [Khasanov, R.] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland; [Shengelaya, A.] Tbilisi State Univ, Inst Phys, GE-0128 Tbilisi, Rep of Georgia; [Di Castro, D.] Univ Roma La Sapienza, INFM Coherentia, I-00185 Rome, Italy; [Di Castro, D.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; [Escamilla, R.] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico (literal)
Titolo
  • Correlation between the transition temperature and the superfluid density in BCS superconductor NbB2+x (literal)
Abstract
  • The results of the muon-spin rotation experiments on BCS superconductors NbB2+x (x=0.2 and 0.34) are reported. Both samples, studied in the present work, exhibit rather broad transitions to the superconducting state, suggesting a distribution of the volume fractions with different transition temperatures (T-c's). By taking these distributions into account, the dependence of the inverse squared zero-temperature magnetic penetration depth (lambda(-2)(0)) on T-c was reconstructed for temperatures in the range 1.5 K less than or similar to T-c less than or similar to 8.0 K. lambda(-2)(0) was found to obey the power law dependence lambda(-2)(0)proportional to T-c(3.1(1)) which appears to be common for some families of BCS superconductors as, e.g., Al doped MgB2 and high-temperature cuprate superconductors as underdoped YBa2Cu3O7-delta. (literal)
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